212121032131 has 8 divisors (see below), whose sum is σ = 224047368720. Its totient is φ = 200270902752.

The previous prime is 212121032119. The next prime is 212121032177. The reversal of 212121032131 is 131230121212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212121032131 - 2²⁹ = 211584161219 is a prime.

It is a super-3 number, since 3×212121032131³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212121032099 and 212121032108.

It is not an unprimeable number, because it can be changed into a prime (212121032111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19046080 + ... + 19057213.

It is an arithmetic number, because the mean of its divisors is an integer number (28005921090).

Almost surely, 2^212121032131 is an apocalyptic number.

212121032131 is a deficient number, since it is larger than the sum of its proper divisors (11926336589).

212121032131 is a wasteful number, since it uses less digits than its factorization.

212121032131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38103605.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 212121032131 its reverse (131230121212), we get a palindrome (343351153343).

The spelling of 212121032131 in words is "two hundred twelve billion, one hundred twenty-one million, thirty-two thousand, one hundred thirty-one".